Interesting Facts About World’s Oceans

The deepest ocean sinkhole in the world is in the South China Sea and is named the Dragon Hole, or Longdong. It is roughly 987 feet deep. Below 328 feet, the hole is devoid of oxygen and deadly to marine life.

When Victor Vescovo reached the bottom of the Mariana Trench, the deepest trench in the world, he discovered a plastic bag and candy wrappers at 10,928 meters (35,849 ft.) below the surface, confirming that human-generated waste can pollute even the deepest parts of the ocean.

It is 100% legal to be buried at sea in the USA. You basically wrap the body in a sheet with some weights, at least 3 miles from shore and throw it off the boat. The Navy even has a program to assist veterans of the armed services.

There is an area in the middle of the Pacific Ocean where retired spacecraft have been routinely deposited. It is known as the “Spacecraft Cemetery”, and notably it is also the place where the defunct Mir space station rests.

Old NYC subway cars are dumped into the Atlantic Ocean to help build an artificial reef to serve as a habitat for marine life.

The earth's oceans may be teeming with massive, hollow, worm-like entities called pyrosome that can grow as big as a sperm whale.

Since sound can travel through the water better than it can in air, the potential number of decibels is greatly increased. LFA Sonar used by ships and submarines is the loudest man-made noise, reaching 200+ decibels. Marine biologists believe that sea creatures may beach themselves to escape the noise.

Most mermaid “sightings” by historical sea travelers were most likely manatees, dugongs, or Steller’s sea cows. In fact, Christopher Columbus spotted 3 manatees near the Dominican Republic and would later write that mermaids are “not half as beautiful as they are painted.”

Most of the internet data is not transferred across continents by satellites. Instead, 97% of intercontinental data is transferred through hundreds of thousands of miles of cables at the bottom of the ocean.

At 63,800,000 square miles, the Pacific Ocean is larger than all of Earth’s land area combined.

When a whale dies and its carcass falls into the Bathyal or Abyssal zone of the ocean floor, it can sustain a complex localized ecosystem of deep-sea organisms for decades. This is called a “whale fall”.

Children from some ethnic groups of Southeast Asia (called Sea Gypsies) are capable of seeing clearly underwater and this skill wears off as they grow up. Some suggest that with practice any young person could achieve an underwater vision.

“Flotsam” is floating wreckage, “jetsam” is cargo that is purposely thrown overboard, “lagan” is goods lying at the bottom of the ocean but reclaimable, and “derelict” is cargo at the bottom of the ocean but lost. These terms are part of the law of admiralty and marine salvage.

The reason the ocean is salty is because of the minerals that are constantly being added by the rivers, but what really causes the ocean to not become saturated with salt is because of the mineral exchange with the magma at the seafloor. Ocean water goes inside the earth into magma chambers and out, every 6-8 million years. We didn’t discover this until about 1979.

Deep-Sea Gigantism is the tendency for species to be larger than their shallower-water relatives. Proposed explanations include: scarcer resources; greater pressure; and colder temperatures.

Jeff Bezos funded a team that searched the Atlantic Ocean for discarded NASA rockets. By 2013, the team salvaged two rockets. After careful inspection, the team realized they found part of the rockets used to carry Neil Armstrong, Buzz Aldrin, and Michael Collins to the moon on Apollo 11.

Divers working on deep-sea infrastructure such as oil pipelines live in a pressurized chamber for a month. They are then taken between the chamber and their worksite by a pressurized diving bell. That way, they only need to be decompressed once, at the end of each 28-day job. This is called saturation diving.

If we could capture just 0.1% of the ocean’s kinetic energy caused by tides, we could satisfy the current global energy demand 5 times over.

Thousands of Shipping Containers are lost to the sea each year, and if a container's cargo weight does not exceed 80% of the containers rated capacity, they will float. About 10,000 shipping containers are lost at sea each year and 10% of those hold toxic chemicals that may leak into the ocean.

The Chicxulub Impact, the asteroid that killed off the dinosaurs, created a mega-tsunami that was over 330 feet tall. If the impact had struck the deep ocean rather than the shallow seas, the wave would have peaked at 2.9 miles.

Until 40 years ago scientists believed all life and food chains ultimately depended on the sun for energy. The discovery of deep-sea vents with whole ecosystems driven solely by chemical energy changed this view. Now it’s thought that life may have actually originated from such systems.

Sea level rise is caused by two main factors, melting land ice (glaciers), and “thermal expansion” which is the expansion of space between water molecules as the ocean gets warmer. So the ocean is both gaining water molecules and the water molecules are spreading out and taking up more space.

We don’t get all of our drinking water from the ocean because it costs $1-2 dollars per cubic meter (264 gallons) to desalinate ocean water, while it only costs 10-20 cents to purify freshwater.

Coconuts transported themselves around the world by floating through the oceans. This is one of the reasons (along with human interference) coconuts are so widespread worldwide. So, yes, coconuts do migrate.

There’s a “dead spot” in the Black Sea where scientists have found ships as old as 1200 years preserved well enough to see chisel marks from the original builder.

"Twenty Thousand Leagues Under the Sea" refers not to depth, but the distance traveled whilst submerged.

There is an intact cask of radioactive plutonium dioxide (part of radioisotope thermoelectric generator) on the bottom of the Pacific Ocean because Apollo 13 failed to land on the moon.

Every year hundreds of Great White Sharks migrate to a random area in the mid-Pacific ocean and loiter around, no one knowing why. This area has been named the “White Shark Cafe.”

Cruise ships dump over a billion gallons of poop and untreated sewage from their passengers into the ocean every year.

Over 90% of the ocean’s plastic waste comes from just 10 rivers, 8 of which are in Asia, and 2 of which are in Africa.

The U. S. Army secretly dumped 64 million pounds of nerve and mustard agents into the ocean, in at least 26 locations off both coasts. The Army can't say exactly where all the weapons were dumped because records are sketchy, missing or were destroyed.

More people have been to the moon than to the bottom of the ocean’s deepest point, Mariana Trench.

Aleksander Doba is a Polish kayaker known primarily for his long voyages across oceans. He kayaked across the Atlantic Ocean under his own power on three separate occasions. He completed his last crossing at the age of 70. His passages remain the longest open-water kayak voyages ever made.

The area that is now the Mediterranean Sea was once dry, but about 5 million years ago the Atlantic Ocean poured through the Strait of Gibraltar at a rate 1000 times that of the Amazon, filling the Mediterranean Sea in about 2 years.

A total of nine nuclear submarines have been sunk around the world and most remain on the ocean floor with their nuclear weapons and reactors intact.

Internet cables that cross the Atlantic Ocean on the seabed are only as thick as a Magic Marker Pen in deep seas. Sharks like chewing these cables though it’s not known why. Sharks can sense electromagnetic fields so they may be attracted to the current.

Modern nuclear submarines are so well cloaked that in 2009, two nuclear ballistic missile submarines (French and British) collided in the Atlantic Ocean by pure chance. Moving very slowly, they weren’t able to detect each other just feet apart.

The Sargasso Sea in the North Atlantic is the only ‘sea’ with no land borders but instead is surrounded by ocean currents. It is known for being incredibly clear and full of a particular type of floating seaweed.

The Bermuda Triangle has as many disappearances as any other place in the ocean of a similar size and many of the mysteries attributed to it happened outside of the triangle.

A fleet of 29000 rubber ducks has been navigating its way around the world’s oceans for the last 20 years after accidentally being dumped in the middle of the Pacific. Scientists have been tracking the ducks’ movements to learn more about ocean currents.

In 1998, a Frenchman named Benoît Lecomte swam 3,716 miles across the entire Atlantic Ocean, from Massachusetts to France; a feat that took him a total of 73 days, 5 of which he was being followed by a great white shark.

The largest volcano on Earth is named Tamu Massif. Located at the bottom of the Pacific Ocean, it has the same surface as New Mexico, making it one of the largest volcanoes in the Solar System.

Fishing nets account for 46 percent of the trash in the Great Pacific Garbage Patch, with the majority of the rest composed of other fishing industry gear, including ropes, oyster spacers, eel traps, crates, and baskets.

The $350 million drillship built in the early 1970’s by US billionaire, Howard Hughes, to collect ‘mineral riches’ from the ocean floor was actually a cover for the CIA that was used to lift a lost Soviet submarine, loaded with nuclear missiles, up from the floor of the Pacific Ocean, 3 miles deep.

The difference between inland seas and lakes is that inland seas are formed as the result of oceans spilling over onto land during warm geological periods.

70% of the world’s oxygen supply actually comes from the ocean as opposed to trees.

In order to stay hydrated, sea snakes drink a thin layer of fresh water that collects on the surface of the ocean, called a “lense”, after rainstorms. They do not drink seawater as previously thought.

When ships pass through Point Nemo in the southern Pacific Ocean, the closest other humans they are to are in the International Space Station 400 km up.

Jellyfish live in every ocean and have survived five mass extinctions, for possibly 700 million years or more, despite most of them lacking specialized digestive, osmoregulatory, central nervous, respiratory, or circulatory systems.

Living in an area where you can see the ocean has been found to reduce psychological stress, even after controlling for factors such as income and neighborhood status.

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